Expanding device.



I PATBNTED DEG. 5,1905.

J. K. PBNFOLD.

BXPANISING nj-lavwn. Arrmdumn rum IABJS, 1905.

Fig.4

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R m. E V

WITNESSES.-

ATTORNEY.

y do declare that the following is a full, clear, I Y and exact description of the invention, which will enable others skilled in the art to which 1 invention consists in a device ada ted to ex pand within llmits on a true one e and en-- 1 down, as they are normall and in which position they are contracte on their smallest To all whom it may coil/067 m T UNITnns A Es PATENT OFFICE.

'JosEPH'K. PENFOLD, OF wARREu oHIo, ASSIGNOR TO CLARENCE A. CRANE, or WARREN, oHIo. I

.Be it known that I, J osErH K. PEivioLD, a

citizen of the United States, residin at War-- ren, in the county of Trumbull an State of Ohio, have invented certain new and useful Improvements in Expanding Devices; and I it appertains to make and use the same. I Y My lnvention relates to an ex anding device for seallng covers on vesse s; an the for white-lead kegs and other vessels, and thus lock the cover on the vessel, all substan- In the accompanying drawin s, Figure 1 is a vertical sectional elevation o the expanding device with the segments thereof thrown circle. Fig; 2 is a vertical sectional elevation corresponding to Fig. 1 and with the segments spread and flattened out horizon,- ta ly, as occurs when the cover and tightening ring are expanded to locking position.

Fig. 3 is a bottom view'of the. expanding device partly sectioned away. Fig. 4 is a plan view of a cover for a can and the fasteningring therein to be expanded. Fig.5 is a erspective view ofone of the several mem 'ers of the group of expanding-segments adapted to engage the-ring except at its overlapping ends. Fig; 6 is a view of a modification of ring-,showingan uncut ring.

Thelnventlon as thus shownis designed to be employed especially in the fastenin of covers or caps on metallic'ke s for Willie lead, paints, varnish, and the ike. kegs or cans are comparatively small generaally, those used for white lead especially not, having a capacity exceeding a gallon or somewhat less in measurement.

-.contour, say, of a keg and constructed about Specification of Letters Patent. Application filed March 13, 1905. Serial No. 249,743-

argea locking-ring in an expansible cover These However,

Patented Dec. 5, 1905.

'as 'shown and in this form has a wall 0 about its outside substantially at right angles to the flat body portion a of the cover and has its edge extended into a'roll c adapted to seat over the flan e a ofthe ke Any f suitable-seat serving-t e purpose 0 seat a may be employed, and this is true also of the engaging edge of the cap; but it is essential to both that when they are pressed together they will hermetically seal the keg and fix-v edly lock the cover thereon. Any construction that will secure these essential objects will suffice and be within the sco e of my in vention, provided, however and fld such construction is capable of being fastened by means of an expanding-ring D. In this instance .and preferably I employ a split or out ring having overlapping ends and fitting within and about the base of the cover o rther, that 4 in this condition. The measure of expan- I sion of both the ring and the cover is fixed by 7 said ring, and the idea is to spread the ring until the ends will spring into abutment one againstthe other and which is their maxi} mum expansion. I might, however, use a 1 whole or uncut ring of ductile metal and expand it to the dimensions required herein, and it would serve all the purposes of the split ring,and such a ring is shown in Fig. 6 and marked D; i

Now having the several parts provided as above described and the keg filled, presum ably, with white lead the next step is to secure the cover thereon, and this brings this description directly to the means for accomplishing this purpose.

Having both a. covera'nd a fastening-ring toexpand and secure the cover, I have devised an expanding mechanism comprising a suitable head H, having a shank h, adapted to be engaged in any suitable down press and car'rymg about its-bottom a series of segments G. These segments in the aggregate constitute a complete circle extending some distance out beyond the'edge of head H and I i in a corresponding channel 72/ in the bottom of said headand in which they are confined provided with a rounded bearing g, socketed by diskJ, overlapping said bearings or shanks v g at the bottom and confinin the segments,

while they have perfect free om of play up and down within limits. The upward limit is their engagement against the bottom of head H, Fig. 2, and their downward limit or drop is against disk J at their shoulders g, Fig. 1. .The disk J is rounded about its top edge to conform to the groove h in head II and complete the seat for the segments.

A ring L rests about the base of head H upon the several segments equally, and a series of springs l, socketed therein and in head H and placed at intervals, serve to exert a normal downward pressure upon said ring, and thus keep the segments in their narrowest and depressed position, as in Fig. 1. Then as power is applied for expansion the said segments have a maximum expansion,

as in Fig. 2, in which position they not only spread ring D, but cause its ends to come to gether in abutting and locking relation. this operation the wall 0 of the cover is in like measure spread and enlarged about its base, so that it forms a distinct bead externally, which engages beneath the edge of the inturned orseating surface or portion a of the keg.

All the segments G are provided with. transverse grooves or shouldered offsets g in their outer wider ends and in the lower edges thereof where they bear against ring D, so as to hold the said ring down where they engage the same in the expanding operation; but the segment G, which comes at the front opposite the inner end (i of the ring, necessarily has a recess or offset g of greater depth than the recess g in the other segments, and so it follows when the ring is fully expanded the end (1 thereof will spring or snap into line with. and engage the end (1, and thus become locked and lock the cover on the keg. When down pressure onthe device is relaxed, the several segments are thrown down into normal position again and the device is ready for another operation. Slight projections g are shown on the shanks or bearings of the segments, which keep them apart, and

such projections may be located in any other positlon where they will do'the work and keep the segments uniformly spread and separated. Segment G really is an idle member except as it fills a space in the circle of segments; but it does not bear against the ring, as the others do. If the ends (1 and (Z' of the ring should fail to exactly lock in a single depression, the device can be rotated slightly and de ressed again, which will cause them to loc effectually.

A pin n, engagin in a slot n in one of the series of segments serves to keep them all from rotating together in their bearings, and the said segments may be relatively larger or smaller than shown and serve my purpose. However, for all purposes the present proportion is a preferred size. Usually the said segments orinembers are cast but they may be radially sawed out of a single piece of metal suitably fashioned for this urpose.

In operation cover C is irst placed on the keg. Then the ring D is placed therein about the base of the cover and against the vertical wall thereof, or cover and ring may come to the keg assembled, and last of all the spreading or expanding device is lowered and depressed by power. In this operation some of the pressure comes upon the keg or vessel; but the great pressure is lateral against the ring D and the cover, and the metal of the cover is thin enough to effect a distinct rib'in the wall thereof opposite the ring on the outside to make locking engagement with seat a of the keg.

The lips or overhanging portions at the top and outer edge of the segments bear upon the ring and hold it down while the expansion thereof is in progress, and all the segments are designed to exert a like pressure uniformly except segment G, which in a sense is an idler.

What I claim is 1. In devices for securing covers on cans and other vessels, a series of radiallydis posed members having their outer edges curved to the segment of acircle, a head from which said segments are pivotally suspended at their inner ends at a downward inolination and a device adapted to exert a yielding pressure downward on said members between their ends, whereby when said members are pressed to a horizontal position they splread on a larger radius and separate latera y.

2. A device for securing covers on vessels comprising a head constructed to apply power on the top thereof, a series of segments having outer curved edges disposed in a circle about the bottom of the said head, means fixed to the bottom of the said head overlapping the inner bearing ends of said segments, and means about the outer portion of said head to exert a yielding downward pressure on said segments.

3. A device consisting of a circular head provided with a shank to make power connection, a series of laterally-spreadable se ments pivotally supported on the under 'si e of said head, and a support centrally beneath said head overlapping the inner bearing ends of said segments and constructed with an annular shoulder engaging the portions of said segments at their inner ends to afford uniform support therefor.

4. The head having a shank on its top and a groove about its edge and bottom, in combination with a series of radially-disposed segments having rounded bearings resting in said groove, a confining-disk engaging said bearin s beneath said spring-pressed mechanismbearing upon the top of said segments.

5. A device for securing covers on metallic vessels in which there is an expansiblerring, Intestimony whereof I sign this specifica- I 'the same comprising asuitablehead and a tion-in the presence of tWoWi-tnesses.

series of segments radially and pivotally dis-- posed about the same, stops to limit the'move- V 5 ments of said segments on their pivots and Witnesses:

the said segments constructed at their outer .R. B. MOSER,

edges with grooves to engage said ring; (-3. A. SELL.

JOSEPH PENFOLD. 

